Data & Samples > Core Samples > Gulf Coast Repository >

GCR Display Cores

Section 148-504B-251R-1

Lithology

Moderately phyric plagioclase-olivine-clinopyroxene diabase.

Interpretation

The rocks recovered from Hole 504B on Leg 148 are massive, have few intrusive contacts, and have the texture of diabase, and therefore appear to be a continuation of sheeted dikes that were drilled on DSDP Leg 83 and ODP Legs 111, 137, and 140. Twenty-five lithologic units were identified based on the presence of chilled contacts, and differences in mineralogy and grain size.